Is there a way to return to where you left off in the offline version of the survey?
Offline Mode does not necessarily have a ‘Save and Continue’ capability, but having said that, each response that you submit via offline mode is saved on the Offline landing page.
After submitting a response, you should see a ‘View Responses’ button that will take you to a landing page that will have links to all of the responses submitted thus far, including Partials. You can click to ‘edit’ any response you wish, but the process will be very manual as the responses are not identified on this landing page.
In short, I don’t think Offline Mode was created with the intention to serve as a ‘save and continue’ survey, but using the above option you might be able to work around it.
I hope this helps!